定义一个类实现银行帐户的概念，包括的变量有"帐号"和"存款余额"，包括的方法有"存款"、"取款"、"查询余额"和”显示帐号”。定义主类，创建帐户类的对象，并完成相应操作。-Define a class that implements the concept of a bank account, including the variable account and the balance of deposits, including the "deposits", "withdrawals, check balances and account. Definition of the main class, create an account class object, and complete the operation.